gearhead80 wrote:[That 200cc quad engine and trans weighs around 60lbs. Your utility honda 13hp engine weighs anywhere from 60-80 depending on configuration. Put it this way, an entire XR 200 honda dirtbike only weighs 222lbs. So try again at your twice the weight.. All I know is I could take my 450cc quad motor and trans out and throw it around. I'd be suprised if it weighed 100lbs at 50hp.

Couple of things you're forgetting; Your quad motor has no internal ignition coil, no built-in fuel tank, and no built-in exhaust system, no airbox/filter. The utility engine has all those things. You are guessing at the weights, my friend, and made-up numbers don't prove much. I weighed my 13hp Honda engine on my Mudbuddy and it weighed 48 lbs. It has ignition, fuel tank, airbox/filter, and muffler on it. You may have been able throw around your 450cc quad engine, but it had none of the stuff it needs to actually run. I stand by my statement.

BTW, there use to be a mudboat builder here that build the "Way-Maker" Mudboat. This mudboat had aninfinitely adjustable variable pitch prop assembly. You had a lever you could position anywhere from 9" pitch forward to -4" pitch reverse. That is how you shift gears on water.....

Best pic. I could find of the prop assembly:those blades rotate pitch....

A legit mud boat, way cool. I am curious about the variable pitch setup on a mud boat. From what I have read, the variable pitch props are finicky, and are somewhat delicate on small applications. I would be worried about the mud and silt getting into the gearing leading to excessive wear.

BTW, there use to be a mudboat builder here that build the "Way-Maker" Mudboat. This mudboat had aninfinitely adjustable variable pitch prop assembly. You had a lever you could position anywhere from 9" pitch forward to -4" pitch reverse. That is how you shift gears on water.....

Best pic. I could find of the prop assembly:those blades rotate pitch....

A legit mud boat, way cool. I am curious about the variable pitch setup on a mud boat. From what I have read, the variable pitch props are finicky, and are somewhat delicate on small applications. I would be worried about the mud and silt getting into the gearing leading to excessive wear.

Land & Sea used to make a variable prop, It didn't work for beans....

this one works. It has a patent on it, but that patent might have run out by now....

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beaunelli wrote:motor looks good and looks like itll work tell all the "mud motor engineers'' that are commenting on this to go fly a kite.

No one is contesting that it will provide forward propulsion. Perhaps you should attempt to read what us armchair engineers have posted with an attempt yo understand the physics involved before you tell us to fly a kite. Making it work and make it work well enough to justify reinventing the wheel are two different things. I want to see it in mud, it is a mud motor after all.

Op, what rpm did you pitch your prop to

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Botiz630 wrote:How much does an apostrophe cost down south? Must be quite a bit, based on how sparingly you use them.

Sob! Me and brother were just taking about doing this. Mad props to the OP. Great idea. If it works for you I will start my adventure shortly after. Possibly using an electric shift 250cc recon motor. Great idea man.

Boats are meant to be in water or on mud. Mud motors are meant to run in water or on mud.

Thus, your running your motor on dry ground with the boat still on the trailer..... I AM NOT IMPRESSED... Anyone can tack some pipe together, attack some bearings, and a motor allowing it to give the appearance it works all while on land.

That being said, I will not be impressed until you post a video of it in the water......

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okduckdude wrote:Boats are meant to be in water or on mud. Mud motors are meant to run in water or on mud.

Thus, your running your motor on dry ground with the boat still on the trailer..... I AM NOT IMPRESSED... Anyone can tack some pipe together, attack some bearings, and a motor allowing it to give the appearance it works all while on land.

That being said, I will not be impressed until you post a video of it in the water......

And so with this statement I see that a lawnmower engine shouldn't have been used for a boat engine either. . Kinda like the pot calling the kettle black. Everyone can criticize over the computer and never try something on their own. But hey, Thomas Edison was told he was crazy too...

If I ask a question, I don't want your opinion. I want facts. Don't tell me something you think, tell me something you know.It's easier to say I don't know, than make something up. Although, being a forum the next guy will know more no matter what.

okduckdude wrote:Boats are meant to be in water or on mud. Mud motors are meant to run in water or on mud.

Thus, your running your motor on dry ground with the boat still on the trailer..... I AM NOT IMPRESSED... Anyone can tack some pipe together, attack some bearings, and a motor allowing it to give the appearance it works all while on land.

That being said, I will not be impressed until you post a video of it in the water......

And so with this statement I see that a lawnmower engine shouldn't have been used for a boat engine either. . Kinda like the pot calling the kettle black. Everyone can criticize over the computer and never try something on their own. But hey, Thomas Edison was told he was crazy too...

I think you missed his point. Showing a video of it running on the trailer means nothing, other than he connected it and the motor runs. Only when it is proven to actually work in the environment it is intended (in the marsh) will it show whether or not it will work. Post up a video of it on plane shifting gears and put an end to the debate.

"Do you care about freedom? Dreams may have inspired it, and wishes prompted it, but only war and weapons have made it yours."

Looked like his point was to be an ***. The guy was just posting a video of his progress like people have asked. Tired of people just being blatant a-holes about something different. Didn't know this was the "shoot people's ideas down and tell them it's stupid" board.

If I ask a question, I don't want your opinion. I want facts. Don't tell me something you think, tell me something you know.It's easier to say I don't know, than make something up. Although, being a forum the next guy will know more no matter what.

gearhead80 wrote:Looked like his point was to be an ***. The guy was just posting a video of his progress like people have asked. Tired of people just being blatant a-holes about something different. Didn't know this was the "shoot people's ideas down and tell them it's stupid" board.

But that wasn't the content of your last post. You can disagree with the delivery, but his point is valid.

"Do you care about freedom? Dreams may have inspired it, and wishes prompted it, but only war and weapons have made it yours."

Yea to him, he didn't start the thread so it doesn't matter what I say to him. I was just making a valid point, not shooting down the guy who started the threads' progress. There is a difference...

If I ask a question, I don't want your opinion. I want facts. Don't tell me something you think, tell me something you know.It's easier to say I don't know, than make something up. Although, being a forum the next guy will know more no matter what.

gearhead80 wrote: he didn't start the thread so it doesn't matter what I say to him. ...

You might want to run that by the moderators before you do something really dumb.

gearhead80 wrote: I was just making a valid point, not shooting down the guy who started the threads' progress. There is a difference...

Actually, I think okduckdude was also making a valid point. Just because the position doesn't agree with yours doesn't mean its not valid. And you? Were you not "shooting down" someone's position? Yes; pot/kettle.

If I ask a question, I don't want your opinion. I want facts. Don't tell me something you think, tell me something you know.It's easier to say I don't know, than make something up. Although, being a forum the next guy will know more no matter what.